Lookee what I found in the garage!
The tail off last year's 2007 Honda Civic winter beater!
http://ecomodder.com/forum/showthrea...dan-31498.html
It's a surprisingly close fit to the Prius, but it'll definitely need some nip & tuck surgery to get it just right. And I'll need to put a receiver on the car to mount it.
Despite the disappointingly small improvement it made on the Civic, it should work better on the Prius with its e-CVT.
A project for later this fall, anyway.